Automatic burner adjustment



Aug. 31,1926. mmz

F. E. WHITE ET AL I AUTOMATI C BURNER ADJUSTMENT Filed June 3, 1926' Wed Z: Wile; ag/red flu ttz'man. 5' miwMfBf jg j'lvenians':

Patented Aug. 31, 1925.

nears "r orsics- OF MASSACHUSETTS.

MASSACHUSETTS, ASSIGNORS :MASSACHUSETTS, A CORPORATION AUTOMATIC BURNER ADJUSTMENT.

Application filed June 3,

The present invention relates to means for insuring the proper adjustment of a burner of a constant level oil stove.

In stoves of this type a constant level of fuel oil is supplied and the wick or kindler of the burners is lowered or raised below or above this oil level as it is desired to light or extinguish the same.

The relation of the oil level to the burner for lighting purposes is usually such that after lighting the flame must be turned down for cooking, that is the burner must be raised somewhat in relation to the oil level. This is especially true after the stove has been burning for some time and the oil in the supply line has become heated and its specific gravity consequently decreased which may result in flooding the oil bowl which supports the burners.

The invention particularly concerns means for automatically insuring the burner being adjusted from the lighting to burning position without thought on the part of the housewife or operator so that flooding or smoking will be prevented. At the same time the burner may be manually adjusted between high and low. burning limits and may be extinguished without interference with the above mentioned automatic operation or mechanism.

Specifically the invention consists of an automatic adjusting device of the type clescribed which when brought manually into lighting or ignition position will spring back to the burningposition when the handle is released thereby insuring normal and safe operation of the stove.

A stove of this type is illustrated in a patent to White No. 1,488,854 in which a suitable burner elevating mechanism is also shown. No claim is made in this application to any specific form of burner or burner elevating mechanism.

We have illustrated in the accompanying drawings a preferred form of our invention in which Fig. 1 is a front view of handle and dial plate.

Fig. 2 is a sectional elevation along the line 22 of Fig. 1

F ig. 3 is a view partly in section of the device of F 2 with certain parts removed 1926. Serial N0. 113,519.

and with the torsion spring in Burning position. I i

Fig. 4 is a view similar to Fig. 3 with the torsion spring approaching Ignition position.

- F ig. 5 is a view similar to Fig. 3 with the torsion spring in Ignition position.

Fig. 6 18 a perspective view of th torsion spring. 7

Referring now with particularity to the form shown in the drawings, the numeral indicates a spindle capable of rotation as in Patent No. 1,488,854 to elevate and lower a burner in the usual manner. .An angular extension 2 of the spindle is attached as by means of bolt 3 to a handle gear 4 provided with a handle 5 and a pointer 6.

The spindle 1 is rotatable in bearing boss 7 secured to a dial plate 8, which is provided with certain designations such as Out, Burn hereand Light.

Surrounding the bearing boss 7 is a tersion spring 9 which is held within a split tubular extension 10 of the handle gear 4. Each end of the torsion spring 9 is bent outwardly as at 11 and 12 and these ends lie in the split portion of the tubular extension 10.

A stationary boss 13 is secured to the dial plate by any desired means so that upon rotation of the handle gear 4, one end 11 of the spring 9 will engage the same.

The spring 9 is initially put under a tension substantially equivalent to or somewhat greater than the friction to be overcome in raising and lowering the burner and assembly by rotation of the spindle 1. It will be noted that the spring is inactive and rotates freely so long as the burner gearl is operated between the Burn here and the Out positions. In other words the handle gear may be manually set at any point between these limits without interference with or by the spring mechanism. If, however. the handle gear is turned to the left beyond the Burn here position, the end 11 engages the boss 13 and the spring is torsioned to an extent that when the handle is released the spindle and handle will be auto the Burn here position and level stove.

matically brought back to position which is the safe for usual operation of the tubular member engages the end 11 of the means for are, mcluding a split tubular member inov respective actions will or spring 9 which is already held ther movement by the boss V V y it is to be understood that the f Out, Burn here and Light indications on dial plate correspond to positions of the burner With relation to the oil level :so that the may take place.

against liur- Ve claim:

1, In combination, a rotatably mounted burner moving spindle, mnuan operated means for rotating said spindle through an arc, and spring means for retractably rotat in'g said spindle through a portion of said r ly- "2. In combination, a Irotatably mounted burner moving spindle, manually "operated rotating said spindle through an able with said spindle "and a spring Within said member freely movable through a portion of said are "and a stationary stop engageable by said spring at'the :end of said are, said spring'resisting movement through the remainder of said are.

"3. In combination, a rot'atably mounted burner moving spindle, manually operated means fOr moving said spindle through an arc and automatic means for retractably rotating said spindle through a portion of said are including a spring surrounding said spindle freely rotatable through a portion of said are, anda stationaryst opengageable by said spring at the end o tsaiidarc, sai spring resisting movement of said manually operat d means through the remainder of said are.

4. In combination, a rotatably mounted burner elevating spindle, a bearing therefor, in'anually operated handle attached to said spindle, having a split tubular extension surrounding said bearing but spaced therefrom, spring between the bearing and the tubular extension, the ends of said spring lying in the split of the tubular BX- tension and a stationary boss in the :path of rotation ofone of the spring en ds, whereby when the handle is rotated beyond a predetermined point, the spring end will engage the-b0ss and the spring will resist further movement of the hand-1e.

' In testimony whereof We our signatures.

I FRED E. VWHITE.

ALFRED RUTTIMAN. 

